TECHNICAL FIELD

[001] The present disclosure relates to the field of light emitting diode (LED) lighting, controls and installation technology. More particularly, the present disclosure relates toa system for distinct configurations of multiple power inputs with plugin constant current driver for LED tube lights.

BACKGROUND

[002] Lighting technology based on Light Emitting Diodes are usually called as LED, which are classified as luminaires that are designed in different shapes and sizes to fulfill the lighting requirements as per applications and as retrofit lamps designed in a form compatible to replace conventional lamps like bulbs and tube lights. LED bulbs are widely used to address power consumption in lighting as it is easy to replace conventional incandescent, halogen or CFL lamps designed to be suitable for different sockets or holders.

[003] Existing florescent tube light fixtures have ballast either magnetic or electronic with a fixture to hold the florescent lamp and appropriate wiring for power supply and operation. The fixtures are mounted on the walls or ceiling or in recessed fixtures.LED tube lights currently available in the market require power input through G13 pins on one end or both ends. Depending on the type of LED tube light, conventional tube light fixtures have to be modified to suit the chosen LED tube light. The process involves modification of wiring of the fixture with one end or two end power input to accept the chosen LED Tube light operating requirements.

[004] To achieve the existing fixture needs to be removed from the wall, rewired and re-fixed on the wall again, before the user can replace or retrofit the fixture with LED tube lights. This is a complex and cumbersome process, often requiring technical expertise and huge labor expense. This complexity has become a barrier for large scale adoption of LED tube light retrofitting. [005] In the light of aforementioned discussion there exists a need of a system that would ameliorate or overcome the above mentioned disadvantage.

BRIEF SUMMARY

[006] The following presents a simplified summary of the disclosure in order to provide a basic understanding to the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

[007] A more complete appreciation of the present invention and the scope thereof can be obtained from the accompanying drawings which are briefly summarized below and the following detailed description of the presently preferred embodiments.

[008] Exemplary embodiments of the present disclosure are directed towards asystem for distinct configurations of multiple power inputs withplug-in constant current driver for LED tube lights.

[009] Another exemplary embodiment of the present disclosure includes a light emitting diode (LED) driver connected to an atleast one bridge rectifier, whereby the atleast one bridge rectifier includes a plurality of input diodes and the plurality of input diodes further includes a pair of an input terminals, and further the plurality of input diodes includes a pair of output terminals connected to provide direct current (DC) output.

[010] Another exemplary embodiment of the present disclosure further includes atleast one pair of input terminals and atleast one pair of output terminals of the light emitting diode (LED) driver connected to various configurations of input power supply, whereby the light emitting diode (LED) driver further allows a flow of direct current (DC) output from the atleast one bridge rectifier resulting in the light emitting diode (LED) driver to convert the direct current (DC) output from the atleast one bridge rectifier into constant direct current (DC) output for driving the LED light source.

[Oi l] Yet another exemplary embodiment of the present disclosure further includesthe light emitting diode (LED) driver input receives the input power from G13 pins, it rectifies the AC to DC by means of one of two - rectifier sub-circuits, that feeds to a filter circuit that absorbs surge voltage and then feeds the resulting DC to a step-down constant current circuit that delivers appropriate DC power to an array of LEDs within the lamp tube.

[012] An objective of the present disclosure is directed towardsthe system that provides constant current output with high power factor, high efficiency, low THD, high surge voltage immunity, low component count and low height profile.

[013] Yet anotherobjective of the present disclosure is directed towards the system which provides that enables safety protection against component failure drawing large current from the multiple power supply inputs.

BRIEF DESCRIPTION OF DRAWINGS

[014] Other objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein:

[015] FIG. 1A is block diagram depicting aconfiguration of multiple power inputs (first input and second input) to allowpower supply to a plug-in constant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. [016] FIG. IBis block diagram depicting a configuration offirst input to allow power supply to a plug-in constant current driver forlight emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.

[017] FIG. ICis block diagram depictinga configuration for allowing input power supply from second input to a plug-in constant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.

[018] FIG. IDis block diagram depictinga configuration offirst input phase terminal and second input neutral terminal allowing a flow of input power to a plug-in constant current driver forlight emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.

[019] FIG. lEis block diagram depictinga configuration of first input neutral terminal and second input phase terminal to allow a flow of input power to a plug-in constant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.

[020] FIG. 2 is a diagram depicting a system for multiple power input terminals or electrodes to provide input power supply to a plug-inconstant current driver of the light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.

DETAILED DESCRIPTION

[021] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. [022] The use of "including", "comprising" or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms "a" and "an" herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms "first", "second", and "third", and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[023] Referring to FIG. 1A is block diagram 100a depicting a configuration of multiple power inputs (first input and second input) to allow power supply to a plug-in constant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. The block diagram 100a depicts a first bridge rectifier (BRi) 102, a first input 104, a first input phase terminal (PH) 106, a first input neutral terminal (N) 108, a second bridge rectifier (BR ₂ ) 110, a second input 112, a second input phase terminal (PHi) 114, a second input neutral terminal (NO 116, EMI filter 118 and LED driver 120. The first input phase terminal (PH) 106, first input neutral terminal (N) 108 here may be referred as G13 pins. The second input phase terminal (PHO 114 and second input neutral terminal (NO 116 here may be referred as terminal connectors.

[024] As shown inFIG. 1A, the first input 104 and second input 112 allows an alternating current (AC) input power (for example230 volts).The 230Vac supplied at thefirst input phase terminal (PH) 106, the first input neutral terminal (N) 108, the second input phase terminal (PHO 114 andthe second input neutral terminal (NO 116terminals. The current flows through the first bridge rectifier (BRi) 102 which includes SD1, SD2, SD3 and SD4 diodes and the second bridge rectifier (BR ₂ ) HOwhichincludes SD5, SD6, SD7 and SD8 diodes. The output power of first bridge rectifier (BRi) 102 and the second bridge rectifier (BR ₂ ) 110 forms a parallel input to capacitors C2, C3 and a differential choke LI acts as EMI filter 118. The EMI filter 118 also called as "π" filter formation. Hence, the LED driver 120 accepts power from both inputsi.e., first input 104 and second input 112.

[025] Referring toFIG. IBis block diagramlOOb depicting a configuration offirst input to allowpower supply to a plug-inconstant current driver forlight emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure.The first input 104 allows an alternating current (AC) input power (for example 230 volts)is supplied at the first input phase terminal (PH) 106 andthe first input neutral terminal (N) 108. The current flows through first bridge rectifier (BRi) 102 whichinclude SD1, SD2, SD3 and SD4 diodes and passes through the LED driver 120. The Capacitor C2, C3 and a differential choke LI acts as EMI filter 118. The EMI filter 118 also called as "π" filter formation. The second bridge rectifier (BR ₂ ) 110 further includes SD5, SD6, SD7 and SD8 diodes blocks the flow of current from the second input 112. Hence the second input 112 is potential free and do not allow flow of any current through the second bridge rectifier (BR ₂ ) 110.

[026] Referring toFIG. ICis block diagram 100c depicting a configuration for allowing input power supply from second input to a plug-inconstant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. The second input 112 allows an alternating current (AC) input power (for example 230 volts)is supplied at the second input phase terminal (PHi)114 andthe second input neutral terminal (Ni)116. The current flows through the second bridge rectifier (BR ₂ ) 110 whichinclude SD5, SD6, SD7 and SD8 diodes and passes through the LED driver 120. The Capacitor C2, C3 and a differential choke LI acts as EMI filter 118. The EMI filter 118 also called as "π" filter formation. The first bridge rectifier (BRi) 102 further includes SD1, SD2, SD3 and SD4 diodeswhichblock the flow of current to the first Input 104. Hence the firstinput 104 is potential free and do not allow flow any currentthrough the first bridge rectifier (BR ₂ ) 102.

[027] Referring toFIG. IDis block diagram lOOd depicting a configuration offirst input phase terminal and second input neutral terminal allowing a flow of input power to a plug-in constant current driver forlight emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. The alternating current (AC) input power (for example 230 volts) issupplied at the first input phase terminal (PH)106 andthe second input neutral terminal (NO 116.The current flows through SD1, SD3, SD6, SD8 diodes of the first bridge rectifier (BRi) 102 and the second bridge rectifier (BR ₂ ) HOandpasses through LED driver 120. The capacitor C2, C3 and a differential choke LI acts as EMI filter 118. [028] As shown inFIG. lD,the EMI filter 118 also called as "π" filter formation. The diodes SD2, SD4, SD5 and SD7 of the first bridge rectifier (BRi) 102 and the second bridge rectifier (BR ₂ ) 110 blocks the flow current through the second input phase terminal (PHi) 114 and the first input neutral terminal (N) 108. Hence the second input phase terminal (PHi) 114 and the first input neutral terminal (N) 108 are potential freeand do not allow flow any current through the second input phase terminal (PHi) 114 and the first input neutral terminal (N) 108.

[029] Referring to FIG. IE is block diagram lOOe depicting a configuration of first input neutral terminal and second input phase terminal to allow a flow of input power to a plug- inconstant current driver for light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. The alternating current (AC) input power (for example 230 volts)issupplied at the second input phase terminal (PHi) 114 and the first input neutral terminal (N) 108. The current flows through SD2, SD4, SD5, SD7 diodes of the first bridge rectifier (BRi) 102 and the second bridge rectifier (BR ₂ ) 110 and passes on through LED driver 120.

[030] As shown in FIG. IE, the capacitor C2, C3 and a differential choke LI acts as EMI filter 118. The EMI filter 118 also called as "π" filter formation. The diodes SD1, SD3, SD6, SD8 of the first bridge rectifier (BRi) 102 and the second bridge rectifier (BR ₂ ) 110 blocks the flow of current through the first input phase terminal (PH) 106 and the second input neutral terminal (NO 116. Hence the first input phase terminal (PH) 106 and the second input neutral terminal (NO 116 are potential free and donot flow any current through the first input phase terminal (PH) 106 and the second input neutral terminal (Ni) 116.

[031] Referring toFIG. 2 is a diagram200 depicting a system for multiple power input terminals or electrodes to provide input power supply to a plug-inconstant current driver of the light emitting diode (LED) tube light system, according to an exemplary embodiment of the present disclosure. The system includes a light emitting diode (LED) tube light 202, a driver housing 204a and 204b, a cavity bracket 208, an aluminum heat sink 210, a conduit 212, input power supply terminals214a-214d and a supply input power source 216. [032] As shown inFIG. 2, thelight emitting diode (LED) tube light 202 is connected to the driver housing 204a and 204b.The driver housing 204a and 204b further includesthe first bridge rectifier (BRi) 102 whichincludes SDl, SD2, SD3 and SD4 diodes (as shown in FIG. 1A) and the second bridge rectifier (BR ₂ ) 110 whichincludes SD5, SD6, SD7 and SD8 diodes (as shown in FIG. 1A). The driver housing 204a and 204b further comprises thefirst input phase terminal (PH) 106 (FIG. 1A), the first input neutral terminal (N) 108 (FIG. 1A), the second input phase terminal (PHi) 114 (FIG. 1A) and the second input neutral terminal (NO 116 terminals (FIG. 1A).

[033] As shown inFIG. 2, the aluminum heat sink 210includes a conduit 212 at the back side of the light emitting diode (LED) tube light 202. The power supply terminals214a-214d passes through the conduit 212 from the driver housing 204a and 204b and is passed through the end caps206a and 206b. The power supply terminals214a-214d are further connected to various configurationsof concealed wiring (as shown inFIG. 1A-FIG.1E) toinput power source 216. The driver housing 204a and 204bfurther connected to a terminal connector 218 used for direct push- in of solid conductors and which further used to supply of input power. Resulting inthe driver housing 204a and 204bto convert the direct current (DC) output into constant direct current (DC) output for driving of the LED light source.

[034] Although the present disclosure has been described in terms of certain preferred embodiments and illustrations thereof, other embodiments and modifications to preferred embodiments may be possible that are within the principles and spirit of the invention. The above descriptions and figures are therefore to be regarded as illustrative and not restrictive.

[035] Thus the scope of the present disclosure is defined by the appended claims and includes both combinations and sub combinations of the various features described herein above as well as variations and modifications thereof, which would occur to persons skilled in the art upon reading the foregoing description.